Lubricating oil



Patented- Dec. v

LUBRICA'HNG om Alfred Henriksen and Bert E. Lincoln, Ponca City, Okla.,assignors to Continental Oil Company, Ponca City, Okla., a corporationof Dela- I ware No Drawing. Application January 26 1933 Serial N0.853,686

4 Claims. (CL 81-9) Our invention relates to an improved methodanhydrous aluminum chloride, thereby influencfor the production 01 highgrade lubricating oil ing the chlorine content of the finished conandmore specifically comprises such products densation product. The finalcondensation prodasnew compositions of matter. uct may have a chlorinecontent of from .1 to 5 Present day mechanical devices could be eco- 25%or more by weight.

nomically improved as to efiicien'cy if greater pres- Solvents otherthan those mentioned above sures could be imposed at the rubbingsurfaces. be used. Any of the organic acids may be em- The degree ofpressure for which designs can be ployed, including the saturated andunsaturated made is limited. by the amount of pressure which organicacids, those crude organic acids from the hydrocarbon lubricant used forlubricating animal and vegetable oils, naphthenic acids and 55 therubbing surfaces will stand without breaking acids Obtained b h xida nof pe r l um down and allowing metal to metal contact. The y o a bons.

property of lubricants which keeps them from Dilute inorganicacids otherthan nitric may breaking down when spread in thin films between be d tobrea up the a um Sludgerubbing surfaces is usually referred to as thefilm To demonstrate the film strength improvement 70 strength of thelubricant. l of lubricating oils by the addition of our convThe primaryobject of this invention is to prodensation product, we made tests onthe Timken vide lubricants with high fihn strength whichmachinemanufactured and described by the Timwill not break down at highpressures. ken Roller Bearing Company. This machine de- In outline ourinvention comprises the additermines the P essur at which a lubricating011 75 tion of the condensation product between diwill break down andallow metal to metal conphenylene oxide and halogenated organic acidstact. In making the test, weights are added one to hydrocarbonlubricants. by one at regular intervals which increase the An example ofour invention is given to clarify load or pressure at the rubbingsurfaces. The

the inventions, but not to act as a limitation number 0! pound weightsadded before the oil so thereto. Stearic acid was chlorinated by directfilm ruptures is a measure of the film strength chlorination until anamount of chlorine equivof the lubricant being used in the test. Thesealent to the amount contained in dichlor stearic pound weights may beconverted into approximate acid was attached. One hundred and fiftygramspounds per square inch pressure on the rubbing so of this chlorinatedacid and seventy grams of surface. 86 diphenylene oxide were dissolvedin 300 ccs. of I making the following Timken tests a high carbondisulphide- TO this solution w added quality hydrocarbon lubricant wasused: thirty five grams of anhydrous aluminum chloride in small portionsover a period of forty minutes. The reaction mixture was shaken aftereach addi- P un 90 P tion of anhydrous aluminum chloride. Alter-the.732321 11? addition of all 01' the anhydrous aluminum ehlo- $1?bhcsourride, the mixture was refluxed for 3 hours at 120 t F. and thenthe carbon disulphide solvent dis- 40 tilled oil. The aluminum compoundwas broken hydl'mbmlubflwlt 06 i ocar p y ilut mt i aci nd h productdissolved azbo o r z t ie a t ion r fiu c iiffi'fffifi 54.9 31.250

in petroleum ether. Theether solution was water washed and the etherdistilled 01!. The condensation product was then ready for blending Theabove examples show the vast improvein a hydrocarbon lubricant. ment infilm strength accomplished by our inven- I In the above example theoriginal chlor stearic tion. In addition to this improvement. the coacidcontained approximately 23% of chlorine eflicient of friction (oilness)01' the blended lubrl and the condensation product contained approxcantis onlyapproximately half that of the imately 6% chlorine. It should beunderstood iginal Oil asdete min d by the Herschel test-' 50 that largeror smaller amounts of chlorine could ing machine. v e have been used inthe stearic acid with its sub- Any ype of hydrocfl lubricant y be imssequent influence on the condensation product. proved by thisinvention.

It is also within the scope o1' this invention to In the example given,1% of condensation blend the reacting substances in diflerent proproductwas added to. the hydrocarbon lubricant 65 pontions'and use smaller orlarger amounts of but quantities of from 0.1% to 10% or above a 1. Alubricating oil comprising in combination a hydrocarbon oil and a smallpercentage 01. a

halogenated organic acid-diphenylene-oxide con-I densation' product. v

2. A lubricating oil comprising in combination a hydrocarbon oil and asmall percentage of a chlorinated organic acid-diphenylene oxidecondensation product.

3. A lubricating oil comprising in combination a hydrocarbon oil and asmall percentage of a chlorinated naphthenic acid-diphenylene oxidecondensation product.

. 4. A lubricating oil comprising in combination a hydrocarbon oil and asmall percentage of a chlorinated fatty acid-diphenylene oxidecondensation product.

I ALFRED I-IENRIKSEN.

BERT H. IDTCOLN.

